Fairing for a truck trailer



FIG. 1 is a perspective view of a fairing for a truck trailer showing my new design with the trailer body in dotted lines for illustrative purposes only;

FIG. 2 is an enlarged side elevational view thereof, the opposite side being a mirror image of that shown;

FIG. 3 is an enlarged top plan view thereof; and

FIG. 4 is a greatly enlarged front elevational view thereof. 

The ornamental design for a fairing for a truck trailer, as shown and described. 